diff options
Diffstat (limited to 'drivers/scsi')
-rw-r--r-- | drivers/scsi/isci/request.c | 2 | ||||
-rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 2 | ||||
-rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_base.c | 14 | ||||
-rw-r--r-- | drivers/scsi/qlogicpti.c | 13 | ||||
-rw-r--r-- | drivers/scsi/scsi.c | 45 | ||||
-rw-r--r-- | drivers/scsi/scsi_lib.c | 22 | ||||
-rw-r--r-- | drivers/scsi/sd.c | 202 | ||||
-rw-r--r-- | drivers/scsi/sd.h | 7 |
8 files changed, 257 insertions, 50 deletions
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index c1bafc3f3fb1..9594ab62702b 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -1972,7 +1972,7 @@ sci_io_request_frame_handler(struct isci_request *ireq, frame_index, (void **)&frame_buffer); - sci_controller_copy_sata_response(&ireq->stp.req, + sci_controller_copy_sata_response(&ireq->stp.rsp, frame_header, frame_buffer); diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 16b7a72a70c4..3b2365c8eab2 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -1276,7 +1276,7 @@ struct megasas_evt_detail { } __attribute__ ((packed)); struct megasas_aen_event { - struct work_struct hotplug_work; + struct delayed_work hotplug_work; struct megasas_instance *instance; }; diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index d2c5366aff7f..e4f2baacf1e1 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -2060,9 +2060,9 @@ megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) } else { ev->instance = instance; instance->ev = ev; - INIT_WORK(&ev->hotplug_work, megasas_aen_polling); - schedule_delayed_work( - (struct delayed_work *)&ev->hotplug_work, 0); + INIT_DELAYED_WORK(&ev->hotplug_work, + megasas_aen_polling); + schedule_delayed_work(&ev->hotplug_work, 0); } } } @@ -4352,8 +4352,7 @@ megasas_suspend(struct pci_dev *pdev, pm_message_t state) /* cancel the delayed work if this work still in queue */ if (instance->ev != NULL) { struct megasas_aen_event *ev = instance->ev; - cancel_delayed_work_sync( - (struct delayed_work *)&ev->hotplug_work); + cancel_delayed_work_sync(&ev->hotplug_work); instance->ev = NULL; } @@ -4545,8 +4544,7 @@ static void __devexit megasas_detach_one(struct pci_dev *pdev) /* cancel the delayed work if this work still in queue*/ if (instance->ev != NULL) { struct megasas_aen_event *ev = instance->ev; - cancel_delayed_work_sync( - (struct delayed_work *)&ev->hotplug_work); + cancel_delayed_work_sync(&ev->hotplug_work); instance->ev = NULL; } @@ -5190,7 +5188,7 @@ static void megasas_aen_polling(struct work_struct *work) { struct megasas_aen_event *ev = - container_of(work, struct megasas_aen_event, hotplug_work); + container_of(work, struct megasas_aen_event, hotplug_work.work); struct megasas_instance *instance = ev->instance; union megasas_evt_class_locale class_locale; struct Scsi_Host *host; diff --git a/drivers/scsi/qlogicpti.c b/drivers/scsi/qlogicpti.c index b191dd549207..71fddbc60f18 100644 --- a/drivers/scsi/qlogicpti.c +++ b/drivers/scsi/qlogicpti.c @@ -1294,26 +1294,19 @@ static struct scsi_host_template qpti_template = { static const struct of_device_id qpti_match[]; static int __devinit qpti_sbus_probe(struct platform_device *op) { - const struct of_device_id *match; - struct scsi_host_template *tpnt; struct device_node *dp = op->dev.of_node; struct Scsi_Host *host; struct qlogicpti *qpti; static int nqptis; const char *fcode; - match = of_match_device(qpti_match, &op->dev); - if (!match) - return -EINVAL; - tpnt = match->data; - /* Sometimes Antares cards come up not completely * setup, and we get a report of a zero IRQ. */ if (op->archdata.irqs[0] == 0) return -ENODEV; - host = scsi_host_alloc(tpnt, sizeof(struct qlogicpti)); + host = scsi_host_alloc(&qpti_template, sizeof(struct qlogicpti)); if (!host) return -ENOMEM; @@ -1445,19 +1438,15 @@ static int __devexit qpti_sbus_remove(struct platform_device *op) static const struct of_device_id qpti_match[] = { { .name = "ptisp", - .data = &qpti_template, }, { .name = "PTI,ptisp", - .data = &qpti_template, }, { .name = "QLGC,isp", - .data = &qpti_template, }, { .name = "SUNW,isp", - .data = &qpti_template, }, {}, }; diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 2936b447cae9..2c0d0ec8150b 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -55,6 +55,7 @@ #include <linux/cpu.h> #include <linux/mutex.h> #include <linux/async.h> +#include <asm/unaligned.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> @@ -1062,6 +1063,50 @@ int scsi_get_vpd_page(struct scsi_device *sdev, u8 page, unsigned char *buf, EXPORT_SYMBOL_GPL(scsi_get_vpd_page); /** + * scsi_report_opcode - Find out if a given command opcode is supported + * @sdev: scsi device to query + * @buffer: scratch buffer (must be at least 20 bytes long) + * @len: length of buffer + * @opcode: opcode for command to look up + * + * Uses the REPORT SUPPORTED OPERATION CODES to look up the given + * opcode. Returns 0 if RSOC fails or if the command opcode is + * unsupported. Returns 1 if the device claims to support the command. + */ +int scsi_report_opcode(struct scsi_device *sdev, unsigned char *buffer, + unsigned int len, unsigned char opcode) +{ + unsigned char cmd[16]; + struct scsi_sense_hdr sshdr; + int result; + + if (sdev->no_report_opcodes || sdev->scsi_level < SCSI_SPC_3) + return 0; + + memset(cmd, 0, 16); + cmd[0] = MAINTENANCE_IN; + cmd[1] = MI_REPORT_SUPPORTED_OPERATION_CODES; + cmd[2] = 1; /* One command format */ + cmd[3] = opcode; + put_unaligned_be32(len, &cmd[6]); + memset(buffer, 0, len); + + result = scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buffer, len, + &sshdr, 30 * HZ, 3, NULL); + + if (result && scsi_sense_valid(&sshdr) && + sshdr.sense_key == ILLEGAL_REQUEST && + (sshdr.asc == 0x20 || sshdr.asc == 0x24) && sshdr.ascq == 0x00) + return 0; + + if ((buffer[1] & 3) == 3) /* Command supported */ + return 1; + + return 0; +} +EXPORT_SYMBOL(scsi_report_opcode); + +/** * scsi_device_get - get an additional reference to a scsi_device * @sdev: device to get a reference to * diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index da36a3a81a9e..9032e910bca3 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -900,11 +900,23 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) action = ACTION_FAIL; error = -EILSEQ; /* INVALID COMMAND OPCODE or INVALID FIELD IN CDB */ - } else if ((sshdr.asc == 0x20 || sshdr.asc == 0x24) && - (cmd->cmnd[0] == UNMAP || - cmd->cmnd[0] == WRITE_SAME_16 || - cmd->cmnd[0] == WRITE_SAME)) { - description = "Discard failure"; + } else if (sshdr.asc == 0x20 || sshdr.asc == 0x24) { + switch (cmd->cmnd[0]) { + case UNMAP: + description = "Discard failure"; + break; + case WRITE_SAME: + case WRITE_SAME_16: + if (cmd->cmnd[1] & 0x8) + description = "Discard failure"; + else + description = + "Write same failure"; + break; + default: + description = "Invalid command failure"; + break; + } action = ACTION_FAIL; error = -EREMOTEIO; } else diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 12f6fdfc1147..352bc77b7c88 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -99,6 +99,7 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC); #endif static void sd_config_discard(struct scsi_disk *, unsigned int); +static void sd_config_write_same(struct scsi_disk *); static int sd_revalidate_disk(struct gendisk *); static void sd_unlock_native_capacity(struct gendisk *disk); static int sd_probe(struct device *); @@ -395,6 +396,45 @@ sd_store_max_medium_access_timeouts(struct device *dev, return err ? err : count; } +static ssize_t +sd_show_write_same_blocks(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct scsi_disk *sdkp = to_scsi_disk(dev); + + return snprintf(buf, 20, "%u\n", sdkp->max_ws_blocks); +} + +static ssize_t +sd_store_write_same_blocks(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct scsi_disk *sdkp = to_scsi_disk(dev); + struct scsi_device *sdp = sdkp->device; + unsigned long max; + int err; + + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + + if (sdp->type != TYPE_DISK) + return -EINVAL; + + err = kstrtoul(buf, 10, &max); + + if (err) + return err; + + if (max == 0) + sdp->no_write_same = 1; + else if (max <= SD_MAX_WS16_BLOCKS) + sdkp->max_ws_blocks = max; + + sd_config_write_same(sdkp); + + return count; +} + static struct device_attribute sd_disk_attrs[] = { __ATTR(cache_type, S_IRUGO|S_IWUSR, sd_show_cache_type, sd_store_cache_type), @@ -410,6 +450,8 @@ static struct device_attribute sd_disk_attrs[] = { __ATTR(thin_provisioning, S_IRUGO, sd_show_thin_provisioning, NULL), __ATTR(provisioning_mode, S_IRUGO|S_IWUSR, sd_show_provisioning_mode, sd_store_provisioning_mode), + __ATTR(max_write_same_blocks, S_IRUGO|S_IWUSR, + sd_show_write_same_blocks, sd_store_write_same_blocks), __ATTR(max_medium_access_timeouts, S_IRUGO|S_IWUSR, sd_show_max_medium_access_timeouts, sd_store_max_medium_access_timeouts), @@ -561,19 +603,23 @@ static void sd_config_discard(struct scsi_disk *sdkp, unsigned int mode) return; case SD_LBP_UNMAP: - max_blocks = min_not_zero(sdkp->max_unmap_blocks, 0xffffffff); + max_blocks = min_not_zero(sdkp->max_unmap_blocks, + (u32)SD_MAX_WS16_BLOCKS); break; case SD_LBP_WS16: - max_blocks = min_not_zero(sdkp->max_ws_blocks, 0xffffffff); + max_blocks = min_not_zero(sdkp->max_ws_blocks, + (u32)SD_MAX_WS16_BLOCKS); break; case SD_LBP_WS10: - max_blocks = min_not_zero(sdkp->max_ws_blocks, (u32)0xffff); + max_blocks = min_not_zero(sdkp->max_ws_blocks, + (u32)SD_MAX_WS10_BLOCKS); break; case SD_LBP_ZERO: - max_blocks = min_not_zero(sdkp->max_ws_blocks, (u32)0xffff); + max_blocks = min_not_zero(sdkp->max_ws_blocks, + (u32)SD_MAX_WS10_BLOCKS); q->limits.discard_zeroes_data = 1; break; } @@ -583,29 +629,26 @@ static void sd_config_discard(struct scsi_disk *sdkp, unsigned int mode) } /** - * scsi_setup_discard_cmnd - unmap blocks on thinly provisioned device + * sd_setup_discard_cmnd - unmap blocks on thinly provisioned device * @sdp: scsi device to operate one * @rq: Request to prepare * * Will issue either UNMAP or WRITE SAME(16) depending on preference * indicated by target device. **/ -static int scsi_setup_discard_cmnd(struct scsi_device *sdp, struct request *rq) +static int sd_setup_discard_cmnd(struct scsi_device *sdp, struct request *rq) { struct scsi_disk *sdkp = scsi_disk(rq->rq_disk); - struct bio *bio = rq->bio; - sector_t sector = bio->bi_sector; - unsigned int nr_sectors = bio_sectors(bio); + sector_t sector = blk_rq_pos(rq); + unsigned int nr_sectors = blk_rq_sectors(rq); + unsigned int nr_bytes = blk_rq_bytes(rq); unsigned int len; int ret; char *buf; struct page *page; - if (sdkp->device->sector_size == 4096) { - sector >>= 3; - nr_sectors >>= 3; - } - + sector >>= ilog2(sdp->sector_size) - 9; + nr_sectors >>= ilog2(sdp->sector_size) - 9; rq->timeout = SD_TIMEOUT; memset(rq->cmd, 0, rq->cmd_len); @@ -660,6 +703,7 @@ static int scsi_setup_discard_cmnd(struct scsi_device *sdp, struct request *rq) blk_add_request_payload(rq, page, len); ret = scsi_setup_blk_pc_cmnd(sdp, rq); rq->buffer = page_address(page); + rq->__data_len = nr_bytes; out: if (ret != BLKPREP_OK) { @@ -669,6 +713,83 @@ out: return ret; } +static void sd_config_write_same(struct scsi_disk *sdkp) +{ + struct request_queue *q = sdkp->disk->queue; + unsigned int logical_block_size = sdkp->device->sector_size; + unsigned int blocks = 0; + + if (sdkp->device->no_write_same) { + sdkp->max_ws_blocks = 0; + goto out; + } + + /* Some devices can not handle block counts above 0xffff despite + * supporting WRITE SAME(16). Consequently we default to 64k + * blocks per I/O unless the device explicitly advertises a + * bigger limit. + */ + if (sdkp->max_ws_blocks == 0) + sdkp->max_ws_blocks = SD_MAX_WS10_BLOCKS; + + if (sdkp->ws16 || sdkp->max_ws_blocks > SD_MAX_WS10_BLOCKS) + blocks = min_not_zero(sdkp->max_ws_blocks, + (u32)SD_MAX_WS16_BLOCKS); + else + blocks = min_not_zero(sdkp->max_ws_blocks, + (u32)SD_MAX_WS10_BLOCKS); + +out: + blk_queue_max_write_same_sectors(q, blocks * (logical_block_size >> 9)); +} + +/** + * sd_setup_write_same_cmnd - write the same data to multiple blocks + * @sdp: scsi device to operate one + * @rq: Request to prepare + * + * Will issue either WRITE SAME(10) or WRITE SAME(16) depending on + * preference indicated by target device. + **/ +static int sd_setup_write_same_cmnd(struct scsi_device *sdp, struct request *rq) +{ + struct scsi_disk *sdkp = scsi_disk(rq->rq_disk); + struct bio *bio = rq->bio; + sector_t sector = blk_rq_pos(rq); + unsigned int nr_sectors = blk_rq_sectors(rq); + unsigned int nr_bytes = blk_rq_bytes(rq); + int ret; + + if (sdkp->device->no_write_same) + return BLKPREP_KILL; + + BUG_ON(bio_offset(bio) || bio_iovec(bio)->bv_len != sdp->sector_size); + + sector >>= ilog2(sdp->sector_size) - 9; + nr_sectors >>= ilog2(sdp->sector_size) - 9; + + rq->__data_len = sdp->sector_size; + rq->timeout = SD_WRITE_SAME_TIMEOUT; + memset(rq->cmd, 0, rq->cmd_len); + + if (sdkp->ws16 || sector > 0xffffffff || nr_sectors > 0xffff) { + rq->cmd_len = 16; + rq->cmd[0] = WRITE_SAME_16; + put_unaligned_be64(sector, &rq->cmd[2]); + put_unaligned_be32(nr_sectors, &rq->cmd[10]); + } else { + rq->cmd_len = 10; + rq->cmd[0] = WRITE_SAME; + put_unaligned_be32(sector, &rq->cmd[2]); + put_unaligned_be16(nr_sectors, &rq->cmd[7]); + } + + ret = scsi_setup_blk_pc_cmnd(sdp, rq); + rq->__data_len = nr_bytes; + + return ret; +} + static int scsi_setup_flush_cmnd(struct scsi_device *sdp, struct request *rq) { rq->timeout = SD_FLUSH_TIMEOUT; @@ -712,7 +833,10 @@ static int sd_prep_fn(struct request_queue *q, struct request *rq) * block PC requests to make life easier. */ if (rq->cmd_flags & REQ_DISCARD) { - ret = scsi_setup_discard_cmnd(sdp, rq); + ret = sd_setup_discard_cmnd(sdp, rq); + goto out; + } else if (rq->cmd_flags & REQ_WRITE_SAME) { + ret = sd_setup_write_same_cmnd(sdp, rq); goto out; } else if (rq->cmd_flags & REQ_FLUSH) { ret = scsi_setup_flush_cmnd(sdp, rq); @@ -1482,12 +1606,21 @@ static int sd_done(struct scsi_cmnd *SCpnt) unsigned int good_bytes = result ? 0 : scsi_bufflen(SCpnt); struct scsi_sense_hdr sshdr; struct scsi_disk *sdkp = scsi_disk(SCpnt->request->rq_disk); + struct request *req = SCpnt->request; int sense_valid = 0; int sense_deferred = 0; unsigned char op = SCpnt->cmnd[0]; + unsigned char unmap = SCpnt->cmnd[1] & 8; - if ((SCpnt->request->cmd_flags & REQ_DISCARD) && !result) - scsi_set_resid(SCpnt, 0); + if (req->cmd_flags & REQ_DISCARD || req->cmd_flags & REQ_WRITE_SAME) { + if (!result) { + good_bytes = blk_rq_bytes(req); + scsi_set_resid(SCpnt, 0); + } else { + good_bytes = 0; + scsi_set_resid(SCpnt, blk_rq_bytes(req)); + } + } if (result) { sense_valid = scsi_command_normalize_sense(SCpnt, &sshdr); @@ -1536,9 +1669,25 @@ static int sd_done(struct scsi_cmnd *SCpnt) if (sshdr.asc == 0x10) /* DIX: Host detected corruption */ good_bytes = sd_completed_bytes(SCpnt); /* INVALID COMMAND OPCODE or INVALID FIELD IN CDB */ - if ((sshdr.asc == 0x20 || sshdr.asc == 0x24) && - (op == UNMAP || op == WRITE_SAME_16 || op == WRITE_SAME)) - sd_config_discard(sdkp, SD_LBP_DISABLE); + if (sshdr.asc == 0x20 || sshdr.asc == 0x24) { + switch (op) { + case UNMAP: + sd_config_discard(sdkp, SD_LBP_DISABLE); + break; + case WRITE_SAME_16: + case WRITE_SAME: + if (unmap) + sd_config_discard(sdkp, SD_LBP_DISABLE); + else { + sdkp->device->no_write_same = 1; + sd_config_write_same(sdkp); + + good_bytes = 0; + req->__data_len = blk_rq_bytes(req); + req->cmd_flags |= REQ_QUIET; + } + } + } break; default: break; @@ -2374,9 +2523,7 @@ static void sd_read_block_limits(struct scsi_disk *sdkp) if (buffer[3] == 0x3c) { unsigned int lba_count, desc_count; - sdkp->max_ws_blocks = - (u32) min_not_zero(get_unaligned_be64(&buffer[36]), - (u64)0xffffffff); + sdkp->max_ws_blocks = (u32)get_unaligned_be64(&buffer[36]); if (!sdkp->lbpme) goto out; @@ -2469,6 +2616,13 @@ static void sd_read_block_provisioning(struct scsi_disk *sdkp) kfree(buffer); } +static void sd_read_write_same(struct scsi_disk *sdkp, unsigned char *buffer) +{ + if (scsi_report_opcode(sdkp->device, buffer, SD_BUF_SIZE, + WRITE_SAME_16)) + sdkp->ws16 = 1; +} + static int sd_try_extended_inquiry(struct scsi_device *sdp) { /* @@ -2528,6 +2682,7 @@ static int sd_revalidate_disk(struct gendisk *disk) sd_read_write_protect_flag(sdkp, buffer); sd_read_cache_type(sdkp, buffer); sd_read_app_tag_own(sdkp, buffer); + sd_read_write_same(sdkp, buffer); } sdkp->first_scan = 0; @@ -2545,6 +2700,7 @@ static int sd_revalidate_disk(struct gendisk *disk) blk_queue_flush(sdkp->disk->queue, flush); set_capacity(disk, sdkp->capacity); + sd_config_write_same(sdkp); kfree(buffer); out: diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index 47c52a6d733c..74a1e4ca5401 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -14,6 +14,7 @@ #define SD_TIMEOUT (30 * HZ) #define SD_MOD_TIMEOUT (75 * HZ) #define SD_FLUSH_TIMEOUT (60 * HZ) +#define SD_WRITE_SAME_TIMEOUT (120 * HZ) /* * Number of allowed retries @@ -39,6 +40,11 @@ enum { }; enum { + SD_MAX_WS10_BLOCKS = 0xffff, + SD_MAX_WS16_BLOCKS = 0x7fffff, +}; + +enum { SD_LBP_FULL = 0, /* Full logical block provisioning */ SD_LBP_UNMAP, /* Use UNMAP command */ SD_LBP_WS16, /* Use WRITE SAME(16) with UNMAP bit */ @@ -77,6 +83,7 @@ struct scsi_disk { unsigned lbpws : 1; unsigned lbpws10 : 1; unsigned lbpvpd : 1; + unsigned ws16 : 1; }; #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev) |